Form for casting reflecting face curb



April 7, 1942. E. BEHRINGER arm.

FORM FOR CASTING REFLECTING FACE CURB Filed Jan. 17, 1940 s Sheets-Sheet;

' April 7, 1942. E. BEHRINGER IE'VRAL 2,279,104

FORM FOR CASTING REFLECTING FACE CURB Filed Jan. 17, 1940 3 Sheets-Shee t 2 INVENTORS; [m 27 .Beizrznyer, l'fi'arz'ce ii. flarrzaon.

April 7, I942. E. BEHRINGER ET AL FOR CASTING REFLECTING FACE CURB 3 ShetsSheet :5

Filed Jan. 17, 1940 r 58 0 m mm Z a 11m.

Patented Apr. 7, 1942 UNITED STATES" PATE NT OFFICE Emil Behringer, Richmond Hill, N.'.Y., and 'Maurice R. Harrison, Maplewood, N. J., assignors to E. Behringer Sheet Metal Works, Inc ark, N. J a corporation of New Jersey.

., New- Application January 17, 1940, Serial No. 314,200

6 Claims.

This invention relates to molding and to means for molding concrete or cement curbing and.

more particularly to apparatus for molding road curbing having transverse light-reflecting faces,

though it is noted that in some of the claims-the l invention is not limited to molding curbing.

Objects of the invention are to provide strong,

durable accurate molds having smooth molding faces and sharp edges. Another object is to pro- 1 vide such molds for accurately casting curbing having flutes forming reflecting faces for. reflecting light back to an on-coming automobile. This reflecting face curbing is nota part of our invention.

The economical production of sharp, smooth, unwarped molds for the above purpose presented a problem, and it was after considerable investigation and work that we were able to solve the problem. This we did by die-casting the molding form plates and securing these formplates to steel or other strong backing plates. die castings may be of zinc or aluminum alloy, synthetic resin or other suitable alloy, metal, plastic or material. provide smooth sharp molding faces without the expense of machining.

Other objects of the invention are to provide improved molding units in which one or more suitable form plates forming molds as above described are secured to a strong metal backing plate to form molding units adapted to be secured in end-to-end relation.

Other objects are to provide suitable molding for casting reflecting faces and other curbing for straight and curved roads.

Other objects are to provide improved means for casting the curbing in situ, and for pre-casting curbing for later transportation to the roadway.

Additional objects of the invention are to ef-' fect; simplicity, efiiciency, reliability and economy in such molds.

Other objects will appear as the description proceeds; and while herein details of the invention are described, many and various changes may be made Without departing from the scope of invention as in the broader claims.

The herein inventive features are shown in connection with molding units, each of which briefly stated, includes a backing plate of steel or other suitable metal, and one or more die-cast form plates secured against the backing plate. The form plate may be provided on the molding face with light reflecting transverse shoulders" or withothersuitable molding race.

Such

The die-cast form plates I protection plate disposed over an expansion joint at said edge, the molding face at the top iand. '55Zibottom margins having wide rabbetsto formwa base and top molding on the curbing- Theup' per edge of the unit is adapted to guide a trowel plate -movable along the cement to cooperate binder member engages for locking the key plates, and consequently the units, together.v

M In another form of the invention, the. back li ing plate comprises the bottom of a molding trough against which bottom the form plates are secured to provide a mold for precastingathe Fig. 6 is a side elevation showing an end 'of a backing plate with a, plate attached; 7

Fig.7 is an end View showing the backing plate 35 as in Fig. 6;

Fig. 8 is a fragmental side elevation showing end-to-end backing plates with the binder or yoke member about to move into wedging and locking position;

40?? Fig. 9 shows a section taken on the line 9-9 Fig. 10 is a fragmental sectional view taken' on the line Ill-ll] of Fig. 8;' I

Fig. 11 is a perspective of. the yoke or binder "member; 7

Fig. 12 is a fragmental plan showing a modified unit having a long backing plate;

Fig. 13 is a horizontal sectional view, partly in ;plan, showing a modified form plate;

Fig 14- is a horizontal sectional View, partly in plan, showing a backing plate longer than the form plate; 7

Fig. 15 is a fragmental plan showing a unit 55 withhlong. .zcur-ved backing .'.plate and modified In one form of the invention, the mOldingnh-it is supported, at the edge of the pavement 'by a with the upper rabbet to form the top molding. 10 in this form, key plates are secured to adjacent.

ends' of the backing plates, with which plates a form plates for molding'curbing for curves in a roadway;

Fig. 16 is a fragmental plan showing a curved unit using the form plate of Fig. 13;

Fig. 17 is a fragmental plan showing a curved unit using a backing plate as in Fig, 1;

Fig. 18 is a fragmental transverse vertical sectional view, partly in perspective, showing a molding unit as in Figs. 1 to 3, in use for molding the curbing;

Fig. 19 is a perspective view showing the mold-,

ing trough for pre-casting the curbing.

The forms of the invention shown in Figs. 1 i

to 18 are for molding, in situ, cement curbing.

and are suitable for molding curbing Hi (Figs.

14 and 18) extending belowahdadjaceht to the side face of the road pavement II as "-in Fig.- 18.

While the invention is adaptable for;various kindsof curbing it is here shown for making curbing inclined to the road, as in Fig. 18 and provided with flutes l2 (Figie) havingvertical light-reflecting faces of the curb.

The form, as in series of elongated sheet metal channel-shaped l3 transverse to the length;

Figs. 1 to 18 comprises. a

backing plates or members l5 (Fig. 1), which Secured upon the backing member l5, maybe one or more of the die-cast form or mold plates 20, here shown nearly as wide as said web I6 and as long as the short channel member l5a, or secured end to end to each long channel member l5b and having perimetric flangeportions 22, 23 engaged against the upper and lower margins of the long web of the long member 1512, or engaged, against the perimeter otthe short web of the short member l5a, at the inner face of the edge at the bottom of the web .and

near and spaced from and parallel to the top edge of the web, leaving a narrow face 24 (Fig. 3).

Said flange portions 22, 23 are provided with bosses 25 (Figs. 1 to 3) at the innerfaces 1 thereof, for the reception of screws 26 passing a through the web and engaged in said bosses to hold the form plates in place with the perimetric flange against the perimeter of saidweb face.

Said form plate, asshown, is provided on its working face, disposed away 'fromthe web, with feature-forming molding faces-such as a plurality of vertical shoulders 28, 29, 30 perpendicular to the main plane of the plate, and

faced all toward the same end 3| of the plate,

for forming the moldedreflector faces, I3 (Fig.

12) Said shoulders may be evenly spaced along the plate and of a length slightly more than half the vertical width of the plate, terminating a short distance from thetop of the plate and a greater distance from the bottom of the plate.

The outer main edges 32 (Fig. 2) of the shoulders are substantially in a single plane parallel with said web, and each edge 32 is connected to-the inner main edge 33 of an adjacent shoulderby an inclined connecting face 34, slightly convexed at the part 34 adjacent. to. the outer edge and convexed at the part 35 near the inner edge,

weight-and of substantially constant whereby the molding face of the plate is given a step formation.

The shoulders. 28 nearest the plate ends are narrowest, with complementary connecting face portions 34, 35' extending from such narrowest shoulders 28 to the adjacent ends, the sum of the widths of said portions 33', 34' being substantially equal to the width of the connecting portions 34, 35, each said portion 34' or 35 forming, with an adjoining portion of the adjoining plate IS, a composite connecting face 34', 35 similar in shape and width to the first named connecting faces 34, 35.

The intermediate shoulders 29, 30 between said, narrowestshoulders 28. are slightly wider relatively progressively wider as they are more remote from the end 3| to give a flutter effect to the reflected light as cars move along.

The distance between the molding face and said web is least at the bottom and top margins of the plate, the molding face at the top margin being formed with a wide rabbet 38, having a flat lower face 39 (Figs. 3 and 18) intersecting the shoulders, and an axially longitudinal cylin;

drical concaved face 40 extending from said flat, face to the top face of the plate. The top face of the upper flange I! (Fig. 18) serves as a guage for measuring the height of the curbing;

and as a guide for a trowel or smoothing plate, 42 guided by said top face and having a flat part 43 resting on said top face, a down-turned part 7 44 forming a guide shoulder engageable against the exposed part of the web IS, a downwardly offset part 45 engageable flat against the upper "face of the form plate 20, and a curved part 46 complementing the curve of said concaved face 40 for completing the curve of the upper curved bevel 41 of the curbing, the edge 48 being made sufficiently sharp. v

Said working faceat the bottom margin has a wide flat base-forming portion 50 (Figs. 3'and 18) parallel to the web, and an inclined face 5! extending from said base portion 50 and'interconformity to the shape of the molding face;.

whereby the form plateis rendered light in thickness :throughout. l

Said backing members I5, I 5a or 15b are placed in end-for-end relation, with adjacent ends of the said plates interengaged as in Fig. 8, and are thus secured by suitable means such as will now be described.

To this end interengaging key or clamping plates 56, 51 (Figs. 6 and 8) are secured'flaton adjacent margins of the web's. I6, one'plate 56 being provided with a marginal recess 58 adjacent to the other plate; said other plate having a tongue 59 engaged in said-recess to holdithe form sections in alinement. Said tongue and the plate material adjacent to the rec'essihave vertical' flanges 60, 6| perpendicular to the 'plates for facilitating interengaging theplatesv The margins of said key plates most-remote from each other are upwardly converged in relation to each other and outwardlybent' from the web to form converged wedge members .53. 'A yoke or bmder plate has inwardlyturned down-' wardly'. diverged side flangesv 65,3adapted 110:6111. gage: aroundand under; said wedge members; a63 f respectively; and. :to; be l: forced downwardly; on 1 the. wedge; members .witha .wedgingactiom to;

draw the'form. toward .eachgother. The ends322 U The long backing. plates mayv be straight,.for.

straight roads, as the backing plate, I51) ;(Fig. 12)

or they may be made. curved. in either direction, for curves, asthe plates 15c (Figs. .15. and 17):

When the. plates are n-thus curved, the ends of the :form. plates may beeleft perpendicular as at 22 .of Figs. 2, l2 and .17, 01'1" and. I5d. (Fig.-. 16)-.

they may be slightlybeveledin either direction, depending upon .thedirection of the curve, as at 22a of Fig.- 15,-or they may. be respectively cylindrically convexed and concaved as at 22.1. and 22?) of Figs. 13 and 16. The curved ends 223: and 222) are suitable for straight roadway or curves in either direction.

In molding the curbing at the side of the roadway, the form may be placed vertical, but is preferably placed at an angle, asin Fig. 18, in spaced relation with a suitable board or back plate 69, the upper parts of the board and the forms are held in spaced relation by suitable clamps and spacers until the concrete is poured and somewhat hardened.

The lower part of the forms may be supported in any suitable manner. Where there is an expansion joint at the side of the pavement, we may use a sheet metal supporting and retaining protection plate having a lower vertical part H adapted to be disposed or secured against the outer face of the two-part metal strip 12 of the expansion joint 13 at the side of the pavement. To prevent concrete from entering the expansion space 15 the protection plate is bent to form a narrow plate-supporting shoulder part 16, and a wider downwardly offset flange 11, both upwardly inclined over the pavement, the latter having an upturned edge flange 1B. The shoulder 16 or flange 11 or both may be riveted or otherwise secured to the form plate or backing plate or both, if desired; and the flange ll may be rested on the edge of the pavement.

If desired, the curbing may be precast and then transported to the roadway and put in place. To this end we provide a form or mold as shown in Fig. 19 comprising a trough having sheet metal side walls 80, 8| and end walls 82, the bottom of the trough comprising an elongated sheet metal backing plate 83, 84, the part 83 thereof having a pitch relative to the top level of the trough corresponding to the pitch of the active curb face relative to the vertical back curb face, the part 84 being parallel to the vertical back face of the curb.

The ends of the side walls are provided with lateral flanges provided with perforated projections 86 secured thereon and passed through openings in the end walls and to form seats for wedges 81 for holding the walls together in a knockdown manner. Similar wedge connections 36, 8! hold in place angle irons 90, 9| on the inner bottom margin of the side walls to support the plate 83, B4 resting thereon. Other means may be used for securing the part together.

One or more stamped or cast metal form or mold plates 20p are secured against said bottom backing :plate: 83, 84- inany. csuita'blemanner or by screws as .in Figs: 3- Said: forms-plate. or platesv extend from end to' endof; ;tl'iei.bottom :backi'ng plate, and ,are secured ato the :backing. plate: with the bottom edge faceq5l'p'spaced from, andlparallel to, the adj acent side; wall 80.

The form plate '2lIp-1is providedrondts face'dise posed away fromthe ,bottomxplate, with'any; desired molding faces orwith faces providing transverse shoulders. 28p similarato the shoulders, to 30 of :Fig. 2;. theouter-Qmain: edge-of each :shoulder, being connected by; a connecting face to the inner mainedge of an adjacentshoulder,.whereby the' working plate face of the plate, is. given astep formation as in Fig. -;2.-

The top marginof the molding ifacev -is:formed with a wide deep groove 38pforming=an axially longitudinally cylindrical concaved face intersect.-

ing at one side with said shoulders 23p, the-other ,side merging tangentially into the adj acent. side wall .8lforcompleting an' upper .curvedbevel-of the curbing. The working face 5| p at the bottom margin of the form plate is spaced from the adjacent side wall to leave exposed a wide fiat base-forming portion 84 of the bottom plate substantially parallel to the top level of the trough. Said bottom margin 5| p forms an inclined face extending from said base forming portion and intersecting obliquely across the lower part of said shoulders 28p and the connecting faces to form a base portion for the curbing.

The walls 80, 8|, 82 are provided with top flanges 93 adapted to guide a straight-edge scraper, for scraping off excess concrete for making a smooth back face to the curbing.

Because of the releasable means of Figs. 6 to 8 for drawing toward each other and clamping adjacent ends of the backing plates to hold the plates in end-to-end series and to clamp said adjacent transverse ends of the form plates closely together, the new form is particularly suitable for the continuous molding of curbing in situ, as the cement or concrete may be poured against the molding faces in successive batches, each subsequent batch being poured before the adjacent batch is hardened but after a more remote batch has hardened sufficiently for the removal of the molding faces at the hardened batch. Then the releasable means at the hardened batch may be released, and the backing and form plates at the hardened batch may be removed and secured in place to the end of the series at the last poured batch, to allow a-fresh batch to be poured upon the last poured batch while said last poured batch is sufficiently soft to integrally joint the fresh poured batch, whereby the continuous molding of curbing with a limited number of form plates is facilitated.

The invention claimed is:

1. A concrete mold including a rigid backing plate, a thin rigid face plate spaced from the backing plate and having end flanges extending toward and engaging with their free edges against the face of the backing plate at the ends thereof, and means for detachably securing the face plate on the backing plate.

2. A concrete mold including a rigid backing plate, a thin rigid face plate spaced from the backing plate and having end flanges extending toward and engaging with their free edges against the face of the backing plate at the ends thereof, means for detachably securing the face plate on the backing plate, and stiffening flanges extending rearward from the longitudinal edges of the backing plate.

3. A concrete mold including a rigid backing plate, a thin rigid face plate spaced from the backing plate and having end flanges extending toward and engaging with their free edges against the face of the backing plate at the ends thereof, means for detachably securing the face plate on the backing plate, and stiffening flanges extending rearward from the longitudinal edges of the backing plate and face plate. v

4. Apparatus for molding concrete curbing comprising a face mold portion including a rigid plate having a flange at its upper edge extending at an acute angle away from the face of said portion, and a trowel member having a base portion forming an acute angled channel fitting on the angle at the junction of the plate and flange for guided sliding movement therealong.

5. Apparatus for molding concrete curbing comprising a plurality of units each consisting of a backing plate and a face plate secured thereto, each face plate having a pair of end flanges extending to and resting on end portions of the backing plate, the flange at one end of each unit being convex in cross-section and the flange at the other end of each unit being concave in crosssection to fit the convex flange of an adjacent unit and permit close contact between the several face plates when the units are angularly disposed relative to each other.

6. Apparatus for molding a curb face at the side of a paved street wherein the street paving is spaced from the curb base by an expansion strip, said apparatus comprising a supporting plate having a vertical leg adapted to extend down into the space between the paving and base and having a trough-like portion adapted to extend over the paving at the upper edge of the vertical leg, and a face mold having a flanged portion at its lower edge fitting in said troughlike portion of the supporting plate.

EMIL BEHRINGER. MAURICE R. HARRISON. 

